This battery pack features adopts the intelligent control chip， which have better charging and store electric energy effect. It will firmly hold the Xbox One game console and can be used to charge your controllersDescriptionItem Features:For Xbox One wireless controllerSmall enough and easy to carryBattery Capacity: 8800mAhInput: DC 5.0VOutput: DC 2.4VColor: BlackNet Weight: 48 g / 1.69 ozSize: 56 x 43 x 15 mm / 2.2 x 1.69 x 0.59 inch Package Content:4 x Battery Pack4 x USB charging cable